The samples in the GettingStarted are holding a set of quick starts and a set of other very basic samples to get you started with using Azure Service Bus.
The samples in the Microsoft.Azure.ServiceBus folder target the .NET Standard client package. New applications should use this package over the previous client.
The samples in the
Microsoft.ServiceBus.Messaging folder
target the .NET Framework WindowsAzure.ServiceBus NuGet package, which is
maintained for backwards compatibility.
The samples within the Java folder target the azure-service-bus-java package and the Apache Qpid JMS 2.0 client. Additionally all newly added Quickstarts and Tutorials for Java will be available here.
The samples within the Management folder show basic management operations with PowerShell, Azure CLI and .Net.